Он объясняет грамматику правильно и понятно.

He explains grammar correctly and clearly.

Breakdown of Он объясняет грамматику правильно и понятно.

• грамматика: the grammar
• и: and
• объяснять: to explain
• правильно: correctly
• он: he
• понятно: clearly

Questions & Answers about Он объясняет грамматику правильно и понятно.

What is the grammatical role of the words правильно and понятно in this sentence?

They act as adverbial modifiers that explain the manner in which the verb объясняет is performed. Rather than modifying a noun, they describe how he explains the grammar.

What case is грамматику in, and why is that case used here?

Грамматику is in the accusative case because it is the direct object of the verb объясняет. In Russian, the object that receives the action of a transitive verb is typically in the accusative.

Why are правильно and понятно in their neuter forms, and do they originate from adjectives?

Yes, they come from the adjectives правильный (correct) and понятный (clear). In Russian, when these adjectives are used adverbially to describe how an action is performed, they appear in the neuter short form.

Can the order of правильно and понятно be switched without changing the meaning of the sentence?

Yes, you can reverse the order (for example, Он объясняет грамматику понятно и правильно). Although the initial placement might subtly shift emphasis, the overall meaning remains unchanged.

Is it necessary to use a comma between правильно and понятно, and why or why not?

No, a comma is not needed because the two adverbs are connected by the conjunction и. In Russian, when homogeneous elements are joined by и, a comma is typically omitted.